Proteins
- Created by: emma
- Created on: 09-03-14 14:04
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- Proteins
- Amino acids
- H2N
- HCR
- COOH
- HCR
- Condensation reaction
- Add H2O
- Hydrolysis reaction
- Peptide bond breaks
- H2O formed
- Two amino acids formed
- H2N
- Structure
- Primary structure
- Chain of amino acids
- proteins differ because of their primary structure
- Secondary structure
- Polypeptide folds into alpha helix or beta pleat sheet
- Tertiary structure
- Forms shape as R groop bonds together
- Hydrogen bonds (weak)
- Ionic bonds (weak)
- Disulphide bridges
- Quaternary structure
- Two or more polypeptide chains bonded together
- Primary structure
- Biuret test
- Add sodium hydroxide
- Add copper sulphate
- colour change from blue to violet
- Add copper sulphate
- Add sodium hydroxide
- Amino acids
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